Q波段圆波导轴线弯曲TE_(01)-TE_(11)模式变换器设计  

Q-band TE_(01)-TE_(11) high power microwave mode converter

作　　者：张贺[1] 罗勇[1] 徐勇[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《红外与毫米波学报》2013年第5期414-418,共5页Journal of Infrared and Millimeter Waves

基　　金：国家高技术发展计划(2011AA8034035)~~

摘　　要：在模式耦合理论的基础上,采用相位重匹配技术对圆波导轴线弯曲TE01-TE11模式变换器进行了数值优化计算和分析.在Q波段给出了两种不同周期数TE01-TE11模式变换器的优化设计参数.数值计算表明:四周期模式变换器的最高转换效率为98.82%,带宽为2.2 GHz,六周期最高转换效率为99.89%,带宽为1.7 GHz.研究了模式变换器关键几何尺寸在小范围内变化对转换效率的影响.并利用HFSS对给出的模式变换器进行了仿真,仿真结果与数值模拟一致性较好.同时加工了六周期结构模式变换器并进行了小功率热测实验,测试结果表明输出了模式纯度较高的TE11模式.Based on the coupling wave theory and phase re-matching technique, a Q-band TE0^-TEll circular waveguide mode converter for transmitting high power microwave has been designed and analyzed by numerical calculation and sim- ulation. Results of 4-period and 6-period mode converter are demonstrated in this paper. The numerical calculation show that maximum conversion efficiency is 98.82% and bandwidth is over 2.2GHz for 4-period structure. However, for the 6-period one, the maximum conversion efficiency is 99.89% and bandwidth is over 1.7GHz. It also presented the influ- ence of the key parameters on the conversion efficiency. Simulated results from HFSS agreed well with the numerical calculation. Based on the theory and simulated results, a mode converter was fabricated and tested. It turned out that a pure TEH mode was abtained.

关 键 词：回旋行波管 Q波段 耦合波理论 TE01-TE11模式变换 

分 类 号：TN811[电子电信—信息与通信工程]